CHARTS
The main purpose of a bar chart is to compare individual data points with each other. It’s simple, easy to read and shows the approximity of the value of the datapoint. Stacked bar charts extends the standard bar chart from looking a numerical values across one categorical variable to two. It help you simultaneously compare totals and notice sharp changes at the item level that are likely to have the most influence on category totals.
Some characteristics of a Stacked Bar Chart are: